US Bridges

Sleeping Child RD over Sleeping Child Creek 073

Good

Ravalli County, Montana · 9M NE Darby · Structure no. L41602009+00001

Built
1972
53 years old
Condition
Good
inspected August 2023
Type
Culvert
Steel
Length
27 ft
1 main span
Daily traffic
349
2023 count
Owner
County
County Highway Agency

About this bridge

Sleeping Child RD over Sleeping Child Creek 073 is a steel culvert carrying Sleeping Child RD over Sleeping Child Creek 073 in Ravalli County, Montana. It was built in 1972, so it is 53 years old, older than the Montana average of 47 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 349 vehicles a day, roughly 1% of them trucks, projected to reach 366 by 2043. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSleeping Child RD
CrossesSleeping Child Creek 073
Location9M NE Darby
RouteCounty Highway 41602
StateMontana
Coordinates46.11026, -114.00693
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length27 ft (8.2 m)
Longest span25 ft (7.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic349 (2023)
Projected traffic366 by 2043
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Sleeping Child RD over Sleeping Child Creek 073 built?

It was built in 1972, making it 53 years old in 2025.

What condition is Sleeping Child RD over Sleeping Child Creek 073 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2023.

How much traffic does Sleeping Child RD over Sleeping Child Creek 073 carry?

About 349 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Sleeping Child RD over Sleeping Child Creek 073?

The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m).

Who owns Sleeping Child RD over Sleeping Child Creek 073?

It is owned by the County Highway Agency.